﻿     function click2(obj){
        var bac = obj.style.backgroundColor.toLowerCase();
        if(bac=='#ffffff')
            obj.style.backgroundColor = '#eeeeee';
        else if(bac=='rgb(255, 255, 255)')
            obj.style.backgroundColor = '#eeeeee';
        else if(bac=='rgb(238, 238, 238)')
            obj.style.backgroundColor = '#ffffff';
        else if(obj.style.backgroundColor=='#eeeeee')
            obj.style.backgroundColor = '#ffffff';
        else obj.style.backgroundColor = '#eeeeee';
     }